Phonograph record



Aug. 2, 1927.

J. W. BISHOP PHONOGRAPH RECORD Filed April 20. 1923 Patented Aug. 2, 1927.

UNITED STATES 1,637,544 PATENT OFFICE.

JOSEPH W. BISHOP, OF MUSK EGON, .MICHIGAN, ASSIGZN'OR TO THE BRUNSWICK-BALKE- OOLLENDER COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELA- PHONOGRAPH RECORD.

Application filed April 20, 1923. Serial No. 633,463.

This invention particularly relates to the centering apertures with which phonograph records are provided to insure correct positionihg of the records upon the record table of a phono raph.

' The usuad practice in the molding of phonograph records is to provide the molding die with a pin for forming the centering aperture, and for giving to the centering 1o aperture a cylindrical surface which abrupt- 1y meets. the plane reproducing surface of the record. The sharp edges which are thus produced tend to become chipped from engagement with the usual spindle of the rec- 0rd table, and where an'identifying label, which has a central aperture registering with the centering aperture of the record, is at fixed to the record, the edge or wall of the central aperture in the label is generally abraded by engagement with'the spindle.

The centering aperture then'pre'sents an un-' sightly appearance, In addition to the above mentioned undesirable results flowing from the present usual practice of molding phonograph records, the die itself has a tendency to leave fins .or other imperfections where the cylindrical spindle engaging surface of the centering aperture meets'the plane reproducing surface of the record.

The main object of my invention is to provide a'phonograph record having a centering aperture of improved form'adapted to beengaged by the spindle of a phonograph record table without attendant injury to the record or to the label which is usually affixed thereto.

Another object of my invention is to provide a phonographrecord which tends to prevent engagement by the spindle of the 4 record table with the wall of the central aperture in a label aflixed to the record.

Other objects of my invention will become apparent as the detail description progresses,

reference being had to the accompanying drawings, wherein a Fig. 1 is an elevation of a phonograph record embodying the novel features of my invention, and

Fig. 2 is an enlarged fragmentary section taken on line 2j2 of Fig. 1.

Fig. 3 is all-enlarged fragmentary sectional view taken longitudinally through one wall of the centering aperture in the .record.

In the drawing the reference character 10 designates in its entirety a phonograph rec- 0rd of the disk type. Recordsof this type are molded of plastic material by dies of the type shown and described in my co-pending application Serial No. 633462, filed under even date herewith.

WVhile my invention may be applied to either a single-faced or a double-faced phonograph record, I prefer to show a doublefaced record having two labels l1 and 12affixed thereto to identify the sounds recorded upon plane surfaces of the record. Each of the labels 11 and 12 is preferably depressed below its associated reproducing surface as shown in Fig. 2. The labels are affixed to the record by the die in which the conical surfaces 15 and ldwhich join the cylindrical surface 14 with plane surfaces of the record. It is readily understood that the blunt edges formed by the chamfere-d ends 15 and 16 together with the cylindrical surface 14 and the plan-e surfaces of the record are not easily chipped when the record is engaged by the spindle of the record table. It is a st readily understood that the chainfered .nds 15 and 16 aid in aligning the centering aperture 13 with the spindle.

The chamfered ends of the centering aperture not only protect the record in positioning it upon the record table, but also protect it when removing the record for the reason that care is very seldom taken to lift the record in a true vertical direction and" it is more frequently tilted, and in such tilted position, the chamfered ends of the centering aperture accommodate themselves to the centering spindle and thereby prevent damage to both end edges of the centering aperture. With a single faced record, the chamfered end of the centering aperture may be at the plane face only of the record, as the liability of damage is greater at the underside of the record than As shown in Fig. 2 each of the labels 11 and 12 is provided with a central aperture .18 which has its edge spaced from the cylindrical surface 14. Spacing the edges of the apertures 18 from the cylindrical surface l llin this manner permits the plastic material of which the record is made to be molded so as to provide shoulders 19 which abut the edges of the apertures 18 and protect thein from the abrasive action of the spindle. I

I prefer to have portions of the surfaces of the labels 11 and 12 form portions of the frustro conical surfaces 15 and 16. but it is apparent that the edges of the apertures in the labels could be spaced any de-.

sired distance from the centering aperture 13 and yet be protected by shoulders formed upon the record. Turning the edges of the apertures inwardly is advantageous in that any imperfections in the joint between these edges of the label and the record are less noticeable than would be the case if the edges of the apertures werev in plane surfaces of the records.

I am aware that changes in the form, construction and arrangement of parts may be made without departing from the spirit and without sacrificing the advantages of the invention and I reserve the right to make all such changes as fairly fall within the scope of .the following claims.

I claim:'

1. A phonographic disk record having a centering aperture and a label affixed to the disk record and having an opening registering witlrsaid aperture. the edge of the label at said opening being embedded in the body of the record to prevent the wearing and damaging of said edge.

2. A phonographic disk record having a centering aperture and a label aflixed to the disk record and having an opening registering with said aperture, the diskrecord having a recess adjacent said aperture receiving the edge of the label at said opening, said edge lying outside of the plane of the rest of the label and within the centering aperture and thereby being protect-ed from engagement with objects coming n contact with the outer surface of the label.

3. A phonographic disk record having a cylindrical centering aperture and a label affixed to the disk record and having an opening registering with said aperture, the disk record having a recess adjacent one end of said aperture and receiving the edge of the label at said opening, said edge lying outside of the plane of the rest of the label and within the centering apertureand thereby being protect-ed from engagement. with objects coming in contact with the outer surface of the label. a portion of the record which defines said aperture extending radially inwardly with respect to said edge to prevent engagement of said edge with the turn-table spindle which is received in said aperture.

4. A phonographic disk record having a label affixed on one side thereof, the label and the record. having a centering aperture to receive a turntable spindle. the aperture in the record being chamfer-ed and shouldered at its end to receive the aperturcd edge of the label wherebv said ed e of the label will be protected from engagement with objects coming in contact with the surface of the label and also protected from engagement with the turntable spindle.

5. As an article of manufacture, a phonograph record having a label affixed thereto, the record having a centering aperture a portion of the surface ofwhich is formed by a surface of the label.

6,. As an article of manufacture, a phonograph record having a label affixed thereto, the record having a centering aperture terminating at one side of the record in a frustro conical surface partially formed by a surface of the label.

7. As an article of manufacture. a phonograph record having a label aflixed thereto and having a centering aperture registering with an aperture in the label, the

wall of the centering aperture having a shoulder abutting and covering the wall of the aperture in the label.

JOSEPH 'W. BISHOP. 

